Regulating the passage of cloth webs through cloth-finishing machines



Dec. 8,1931. M R, S CHERT 1,835,433

REGULATING THE PASSAGE OF CLOTH WEBS THROUGH CLOTH FINISHING MACHINES Filed Dec. 7, 1929 3 Sheets-Sheet 1 Dec. 8, 1931. M. R. SICH ERT 1,835,438 REGULATING THE PASSAGE OF CLOTH WEBS THROUGH CLOTH FINISHING MACHINES Filed Dec. 7, 1929' .s sheets-sheet 2 nuuumn J ll I I Dec. 8, 1931. M. R. SICHERT 1,835,438

REGULATING THE PASSAGE OF CLOTH WEBS THROUGH CLOTH FINISHING MACHINES Filed Dec. 7, 1929 '3 Sheets-Sheet 5 munlllllllll lllm 'Illlii llll IIIIIIIIIIIIL i 'IIIII III Patented Dec. 8, 1931 UNITED STATES PATENT OFFICE MAX RICHARD SICHERT, OF CHEMNITZ, GERLZEANY, ASSIGNOR T0 G. H. WEISBACH KOMMANDIT'GESELSCHAFT, OF CHEMNITZ, GERMANY, A CORPORATION OF GER- MANY REGULATING- THE PASSAGE OF CLOTH WEBS THROUGH CLOTH-FINISHING MACHINES Application filed December 7, 1929, Serial No. 412,447, and in Germany July 18, 1929.

i5 class usually a pair of guide rollers is ar ranged on each web edge at a determined angle of inclination relativel to the running direction of the web which rollers are pressed against one another, this pressing action being controlled by the edge of the web itself by means of adjustable feelers which upon the web coming out of its normal direction either close an electric contact and thereby cause electromagnets to act 5 upon the guide rollers, or move the guide rollers asunder.

Now all electric regulating devices of this class suffer from the drawback of the contactmembers very easily failing due to deposifzn tion of'flying dust and the like, apart from the fact that electric current must beat disposal to operate these devices. The spacing motion of the guide rollers, however, by means of the feelers is not noxiously influenced, true, but requires an expenditure of power which cannot be exerted by the web edge, more particularly when a thin or only feebly dressed fabric is to be treated in the respective machine.

Now my invention has for its object to so improve devices of the class described that any use of electric power, compressed air, or thermodynamic or hydraulic means is rendered superflous, the control being established also by purely mechanical means but not by a pressure of the web edge on a feeler or the like but by the drawing action of the web edge upon a rotatable actuator which interrupts the action of the guide rollers until the web edge that has come out of normal direction has returned to original position.

In order that my invention can be more easily understood, a preferred embodiment of the same is illustrated by way of example in the accompanying drawings in which Figure 1 is a front view of the device, Figure 2 is a corresponding top view, while Figures 3 to 5 are details of the device. Referring to these drawings, 1 denotes the frame on which the entire device is mounted,

the action of a spring 11. The web 16 passes between the two guide rollers 2 and 5 and thereby rotates the roller 5, the edge of the web being conducted up to a lateral fixed guide. To establish this lateral guidage of the web, a disk 8 is provided which is fitted on its circumference with an adhesive ribbon 9, e. g. of rubber and thereby co-operates with the stationarily mounted guide roller 2 which to this end has a corresponding extension projecting beyond roller 5. As to be seen from Figures 3 and 4, the disk 8 is The axis 5 of the com-' mounted in arms 18, 19 of a member 17 which in turn is adjustably mounted on a pin 20 of the frame. The adjustment of member 17 is effected by a set screw 21 provided on the frame 1 and abuttingon the free end of the arm 18. As disk 8 would be in the path of pin 20, it possesses a suitable recess 22.

Owing to the provision of this recess 22 and of another recess 22 the disk 8 is heavier on one side and consequently returns always automatically to the position illustrated in Figure 1, after having been released by the clamped web edge, as described hereinafter. The disk 8 therefore turns only by an angle of about one third of its circumference.

The frame portion 1, which is illustrated in detail in Figure 5 and wherein the coiled spring 11 and the piston-like member 10 are lodged is rigidly fixed on pin 20.

On the places of entrance and exit of the web edge the frame may be provided further with sheet metal plates 1 by which the Web 16 is accurately guided. When the web edge runs laterally beyond the prescribed path that means arrives between the extension of guide roller 2 and the adhesive ribbon 9 of disk 8, which ribbon may be somewhat inclined as to be seen from Figure 2, then the web edge entrains disk 8 whereby the pin 6 of the latter is turned likewise. Pin 6 carries on its free end a crank-like pin 7 which 5. .An arrangement as specified in claim 2 upon pin 6 revolving is urged on to a collar 10" of the piston member 10 and shifts the latter in the frame ortion 1 so that bail 4 is released and gui e roller 5 is allowed to remove from guide roller 2. This automatic removal of roller 5 can take place because pin 3 from which bail 4 is suspended is situated outside the axis 5 of roller 5. The web 16 then passes freely between the rollers 2 and 5 but, as its other edge is guided by an analogous device, is so far drawn by the latter transversely of its longitudinal direction that its edge which is clam ed between the disk 8 and roller 2 becomes ree. When this has taken place, disk 8 under the action of its overweight returns to the position illustrated in Figure 1, crank pin 7 releases piston member 10 which under the action of spring 11 urges bail 4 with the roller 5 again on to web 16 and stationary roller 2. As already stated, an automatic control of the passage of the web throu h the machine is thus obtained by purel mer i actlon o the web itself. 1

What I claim and desire to secure by Letters ljftgnt, is :-f 1 h f 1. evice or regu at t e assage o the web through a cloth iifiishing machine comprising two guide rollers, one of said guide rollers being adapted to be urged away from the other of said ide rollers,

yielding means for holding sald rollers together a ainst the tendency for their separation, an means operated by the web surface adjacent the edge of the web when said web comes out of its normal direction for overcoming the action of said ielding means.

2. A device for regulating the passage of the web through a cloth finishing machine comprising two guide rollers, one of said guide rollers being adapted to be urged away rom the other 0 said guide rollers, yielding means for holdin said rollers together against the tendency or their separation, an auxiliary disk mounted adjacent the side of one of said guiding rollers and rotatable independently thereof, a connection between said auxiliary disk and said yieldin means, said auxiliary disk bein operated by the edge of the web when sai web comes out of its normal direction, said connections upon said operation overcoming the action of said yielding means whereby one of said guiding rollers moves away from the other of said guiding rollers.

arrangement as specified in claim 2 in which said auxiliary disk is of greater diameter than the guiding roller adjacent which it is mounted.

4. An arrangement as specified in claim 2 in which an auxiliary disk is biased toward a normal position in'which said connections allow said yielding means to hold said guiding rollers together.

anical-means and by the pull in which said connections comprise a pin mounted eccentrically on said auxiliary disk abutting a projection on said yielding means. 6. An'arrangement as specified in claim 2 in which an auxiliary disk is provided on its circumference with an adhesive ribbon.

The foregoing specification signed at Dresden, Germany, this 23rd day of November,

MAX RICHARD SICHERT. 

